3.7V to 9V 5V Multimeter Modified 18650 Li-ion Battery Charge Boost Discharge All-in-One Adjustable Module 2A Micro Type-C

3.7V to 9V 5V Multimeter Modified 18650 Li-ion Battery Charge Boost Discharge All-in-One Adjustable Module 2A Micro Type-C

Aliexpress UK